HTML5 Webbook

31/40

theme g.Construction of a red tide monitoring system based on citizen science (Toshiya Katano) 4) Users (citizens) will be able to take pictures of the sea surface using a smartphone camera from an application on the website or a dedicated application (RAW data, not JPEG) It can be so).From the RAW data of the captured sea surface image, the sea surface part is identified and extracted, the color information (Hue value) of the sea surface part is extracted, and the latitude, longitude, time, and shooting direction information are stored in the server.The user who took the sea surface image will be able to return information on the estimated chlorophyll a concentration of the sea surface and red tide discrimination evaluation (e.g., evaluation on a 2-level scale from "dark red tide" to "no red tide"). . XNUMX) Organize the information stored in the server on a map using GIS and publish it on the web.Users can see red tide information, sea color, and captured images for each time series of the sea area of ??interest.In this sub-issue, we will prepare the infrastructure for such system development. (Results and Future Prospects) The horizontal distribution of chlorophyll-a concentration was investigated by taking images of the sea surface in Tokyo Bay using two commercial digital cameras.We have established a basic technique for investigating the horizontal distribution with a high resolution that cannot be investigated by fixed-point observation.On the other hand, it was also found that the estimated values ??differed depending on the camera.In order to establish a technology for highly accurate estimation with various smartphones, it is necessary to improve the technology for estimating chlorophyll-a concentration using surrounding environment information and photography information as learning data.Since red tide develops at the level of several days and is spatially unevenly distributed, monitoring with high spatiotemporal resolution is important.So far, we are establishing a technology to take pictures of the sea surface using a digital camera or smartphone, extract the color information of the sea surface from the image data, and convert it to chlorophyll a concentration.Therefore, we created a smartphone application using this method, collected sea surface chlorophyll a concentration and sea color from sea surface image data taken by many citizens, and created a mechanism that allows citizens to view the overall image of the data taken by themselves. to develop. (Plan/Method) We are planning to develop a smartphone application or website with the following functions. XNUMX.Acquisition of marine big data and promotion of AI analysis research (XNUMX) Development of a fishery integrated support system that realizes resilient and sustainable fisheries using marine organism big data and training of marine AI human resources